PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/28-19:42:40
G10     251.4          27.7               10.4 +/-    1.70      19.1 +/-    1.70  0.030 / 0.050
G13     52.5           29.1                8.9 +/-    2.04      15.9 +/-    2.04  0.030 / 0.040
G15     92.7           59.8                9.7 +/-    1.19      11.0 +/-    1.19  0.100 / 0.320
G16     294.2          15.6                7.6 +/-    1.42      18.6 +/-    1.42  0.110 / 0.290
G20     271.1          51.5               11.7 +/-    2.86      14.4 +/-    2.86  0.080 / 0.160
G21     335.6          61.1               10.5 +/-    0.75      11.8 +/-    0.75  0.090 / 0.150
G26     267.0          15.1                7.9 +/-    2.95      19.6 +/-    2.95  0.040 / 0.030
G29     164.9          49.2               11.3 +/-    0.40      14.4 +/-    0.40  0.030 / 0.030